Package correction in JSON serializer

Change-Id: I8f599def85cf6bb8126175450668e44c96be123e
diff --git a/serializers/json/src/main/java/org/onosproject/yang/serializers/json/JsonSerializer.java b/serializers/json/src/main/java/org/onosproject/yang/serializers/json/JsonSerializer.java
index a7c9197..f635a50 100644
--- a/serializers/json/src/main/java/org/onosproject/yang/serializers/json/JsonSerializer.java
+++ b/serializers/json/src/main/java/org/onosproject/yang/serializers/json/JsonSerializer.java
@@ -21,13 +21,13 @@
 import com.fasterxml.jackson.databind.node.ObjectNode;
 import org.apache.commons.io.IOUtils;
 import org.onosproject.yang.model.DataNode;
+import org.onosproject.yang.model.ResourceData;
 import org.onosproject.yang.model.ResourceId;
 import org.onosproject.yang.runtime.CompositeData;
 import org.onosproject.yang.runtime.CompositeStream;
 import org.onosproject.yang.runtime.DefaultCompositeData;
 import org.onosproject.yang.runtime.DefaultCompositeStream;
 import org.onosproject.yang.runtime.DefaultResourceData;
-import org.onosproject.yang.runtime.ResourceData;
 import org.onosproject.yang.runtime.YangSerializer;
 import org.onosproject.yang.runtime.YangSerializerContext;
 import org.slf4j.Logger;